Cordierite Armbruster T Physics and Chemistry of Minerals 12 (1985) 233-245 Ar, N2, CO2 in the structural cavities of cordierite, an optical and X-ray single-crystal study Sample: White Well Ar _database_code_amcsd 0007365 17.069 9.718 9.355 90 90 90 Cccm atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) O11 .24705 -.10287 .35888 .0098 .0065 .0072 -.0010 .0030 -.0010 O16 .06241 -.41625 .34866 .0065 .0088 .0075 -.0008 .0000 -.0030 O13 -.17361 -.31026 .35840 .0085 .0076 .0074 .0014 -.0022 -.0020 O26 .04355 -.25090 0 .0056 .0135 .0149 -.0018 0 0 O21 .12229 .18525 0 .0097 .0092 .0149 .0045 0 0 O23 .16385 -.07954 0 .0133 .0042 .0157 -.0032 0 0 AlT11 .25 .25 .24983 .0079 .0047 .0053 .0011 0 0 SiT16 0 .5 .25 .0049 .0056 .0047 0 0 0 SiT21 .19233 .07803 0 .0054 .0034 .0054 .0001 0 0 SiT23 -.13530 .23787 0 .0047 .0042 .0051 -.0007 0 0 AlT26 .05080 .30851 0 .0046 .0047 .0053 .0006 0 0 MgM .33733 0 .25 .955 .0067 .0063 .0091 0 0 -.0002 FeM .33733 0 .25 .045 .0067 .0063 .0091 0 0 -.0002 MnM .33733 0 .25 .005 .0067 .0063 .0091 0 0 -.0002 NaChO 0 0 .25 .05 .05 .03 .09 0 0 0 ArCh1/4 0 0 .25 .72 .095 .051 .045 0 0 0